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