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