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