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