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