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