One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,8)(3,7,4,6)(9,10,13,16)(11,12,14,15)(17,18,21,24)(19,25,27,22)(20,23,29,31)(26,30,28,32)(1,3,5,4)(2,6,8,7)(9,11,13,14)(10,15,16,12)(17,19,21,27)(18,22,24,25)(20,28,29,26)(23,30,31,32)(9,12,14,16,13,15,11,10)(17,20)(18,23)(19,26,27,28)(21,29)(22,30,25,32)(24,31)(1,4,5,3)(2,7,8,6)(10,16)(12,15)(18,24)(22,25)(23,31)(30,32)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.