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