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