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)(11,14)(12,15)(13,16)(17,18,21,24)(19,25,27,22)(20,23,29,31)(26,30,28,32)(1,3,5,4)(2,6,8,7)(9,11,14,10)(12,13,16,15)(17,19,21,27)(18,22,24,25)(20,28,29,26)(23,30,31,32)(9,12,13,11,14,16,15,10)(17,20)(18,23)(19,26,27,28)(21,29)(22,30,25,32)(24,31)(1,4,5,3)(2,7,8,6)(9,13,14,15)(10,12,11,16)(18,24)(20,29)(22,25)(26,28)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.