One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(4,6)(9,13)(11,14)(15,16,18,20)(17,19,21,22)(24,27)(28,29)(17,21)(19,22)(23,24,26,27)(25,28,30,29)(3,4)(5,6)(7,8,10,12)(9,11,13,14)(15,17,18,21)(16,19,20,22)(23,24)(25,29)(26,27)(28,30)(7,9)(8,11)(10,13)(12,14)(15,16)(17,19)(18,20)(21,22)(23,25,26,30)(24,28,27,29)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.