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