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