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