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