1.congratulations on your graduation and hope the future will bring you success and a whole wide world of happiness.

　　恭贺学成毕业，愿你吉星高照，鹏程万里!

　　2.congratulations on your graduation! wishing you a future filled with success and joy of seeing your dreams come true.

　　恭祝学成毕业!愿您前途似锦，梦想成真。

　　3.may you enjoy to the fullest the happiness of today and the opportunity of each tomorrow.

　　祝你享受今日的无上幸福与欢愉，愿你得到明天的每一个良机与幸运。