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