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