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