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