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