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