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