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