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