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)(15,16,19,17)(18,20,22,21)(23,24,28,26)(25,30,27,29)(8,11)(12,14)(16,17)(20,21)(23,25,28,27)(24,29,26,30)(3,4)(5,6)(7,8,10,11)(9,12,13,14)(15,17,19,16)(18,20,22,21)(23,26,28,24)(25,29,27,30)(7,9)(8,12)(10,13)(11,14)(15,18,19,22)(16,20,17,21)(23,27,28,25)(24,30,26,29)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.