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)(15,21)(19,22)(20,24)(1,3,5,4)(2,6,8,7)(9,11,14,22)(10,15,17,24)(12,21,13,20)(16,19,23,18)(2,7)(3,4)(6,8) involution — undirected(9,10)(11,19)(12,16)(13,23)(14,17)(15,20)(18,22)(21,24) involution — undirected(9,12,14,13)(10,16,17,23)(11,20,22,21)(15,18,24,19)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.