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