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