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