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