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