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