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