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)(19,20)(21,29)(22,24)(23,31)(25,27)(26,32)(28,30) involution — undirected(1,2)(3,7)(4,6)(5,8)(9,10,12,14)(11,13,16,15)(17,19,22,27)(18,20,24,25)(21,30,31,26)(23,32,29,28)(1,2,4,6)(3,5,8,7)(9,10)(11,13)(12,14)(15,16)(17,18,22,24)(19,25,27,20)(21,23,31,29)(26,32,30,28)(1,2,4,6)(3,5,8,7)(9,11)(10,13)(12,16)(14,15)(17,20)(18,19)(21,28)(22,25)(23,26)(24,27)(29,30)(31,32)(1,2)(3,5)(4,6)(7,8)(17,18)(19,20)(21,23)(22,24)(25,27)(26,28)(29,31)(30,32) involution — undirected(1,3)(2,5)(4,8)(6,7)(17,21)(18,23)(19,26)(20,28)(22,31)(24,29)(25,32)(27,30) 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.