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