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