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