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