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