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