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