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