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