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