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