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