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