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