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