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