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