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