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