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