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