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