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