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