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