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