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)(17,18,23,25,22,26,20,21)(19,24,30,28,29,32,27,31)(1,2)(3,8)(4,6)(5,7)(9,11)(10,13)(12,16)(14,15)(17,19)(18,24)(20,27)(21,31)(22,29)(23,30)(25,28)(26,32) involution — undirected(1,3,5,4)(2,6,7,8)(10,14)(11,16)(17,20,22,23)(18,25,26,21)(19,27,29,30)(24,28,32,31)(1,4,5,3)(2,6,7,8)(10,14)(11,16)(17,21,20,26,22,25,23,18)(19,28,27,24,29,31,30,32)(10,14)(13,15)(18,26)(19,29)(21,25)(27,30) 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.