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