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)(17,18,22,25,21,23,31,28)(19,24,27,20,26,30,32,29)(1,2)(3,8)(4,6)(5,7)(9,11)(10,13)(12,16)(14,15)(18,23)(19,26)(25,28)(27,32) involution — undirected(1,3,5,4)(2,6,7,8)(10,14)(11,16)(17,19,21,26)(18,24,23,30)(20,28,29,25)(22,27,31,32)(1,4,5,3)(2,6,7,8)(10,14)(11,16)(17,20,22,30,21,29,31,24)(18,19,25,27,23,26,28,32)(10,14)(13,15)(19,26)(20,29)(24,30)(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.