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