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