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