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