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