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