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