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