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