One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,12)(3,10,4,15)(5,14,9,16)(6,13,8,11)(17,18,22,25)(19,23,28,32)(20,29,24,21)(26,31,30,27)(1,3,6,14,7,4,8,16)(2,9,11,10,12,5,13,15)(17,19,22,28)(18,23,25,32)(20,30,24,26)(21,31,29,27)(1,4,7,3)(2,10,12,15)(5,13,9,11)(6,16,8,14)(17,20,21,18,22,24,29,25)(19,26,27,23,28,30,31,32)(1,5,8,10,7,9,6,15)(2,3,13,16,12,4,11,14)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.