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