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