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