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