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