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