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