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