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