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