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