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