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