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)(15,16,21,24,20,26,19,25)(17,22,29,30,18,28,27,23)(3,4)(5,6)(7,9,11,14)(8,12,13,10)(15,17,20,18)(16,22,26,28)(19,27,21,29)(23,24,30,25)(4,6)(15,18,20,17)(16,23,26,30)(19,27,21,29)(22,24,28,25)(7,10,11,12)(8,9,13,14)(16,24)(19,21)(22,30)(23,28)(25,26)(27,29)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.