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