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