You might want to take a look at these titles.
Streams in the Desert for Graduates
By L. B. Cowman, edited by Jim Reimann
This classic title, consisting of 365 daily readings, has been updated by Jim Reimann and published in an inexpensive paperback format so that the graduate will find the reading enjoyable and the portability helpful.
Don't Waste Your Life
By John Piper
Another classic title, this one by John Piper, addressing a subject with which many graduates are grappling. Piper addresses both the saved and unsaved in the preface and urges them to consider Christ.
Just Do Something
By Kevin DeYoung
One has only to look at the subtitle to this book, "How to make a decision without dreams, visions, fleeces, impressions, open doors, random Bible verses, casting lots, liver shivers, writing in the sky, etc." to know that the writing style will appeal to the generational culture of those graduating. Kevin DeYoung gives very practical, Biblical advice as he writes to those seeking God's will for their lives.
Disciplines of a Godly Young Man
by R. Kent Hughes and W. Carey Hughes
Written by a father-son team, this hardback book seeks to draw young men to seek Biblical discipline in their lives. Using current topics and concerns, the authors look at subjects like relationships, work and prayer.
Faithful Women and Their Extraordinary God
By Noel Piper
And last, but not least, Noel Piper has written a book of five biographies of godly women that will be an inspiration to young women graduating this year. Each of these women impacted the world around them for Christ in "extraordinary" ways