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