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