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