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