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