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