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