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