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