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