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