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