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