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