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