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