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