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