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