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)(15,16,18,21)(17,23,25,20)(19,22,26,29)(24,30,27,28)(8,11)(9,14)(17,24)(19,26)(20,28)(22,29)(23,30)(25,27) involution — undirected(4,6)(15,17,18,25)(16,20,21,23)(19,27,26,24)(22,30,29,28)(4,6)(7,9,10,14)(8,12,11,13)(16,21)(20,23)(22,29)(28,30)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.