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