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