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