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