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