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