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)(9,13)(10,11)(12,14)(15,16,19,20)(17,21,23,24)(18,26,27,22)(25,30,29,28)(3,4,5,6)(8,11)(12,13)(16,20)(17,23)(18,27)(28,30)(7,9)(8,12)(10,14)(11,13)(15,16)(17,24)(18,22)(19,20)(21,23)(25,30)(26,27)(28,29) involution — undirected(3,4)(5,6)(7,8)(9,12)(10,11)(13,14)(15,17)(16,21)(18,25)(19,23)(20,24)(22,28)(26,30)(27,29) involution — undirected(15,18,19,27)(16,22,20,26)(17,25,23,29)(21,28,24,30)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.