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