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