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