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