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