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