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