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