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