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