One vertex per element, one color per generator, with an edge from x to x·s.
(1,2) involution — undirected(8,11)(12,14)(15,16,20,19)(17,23,25,21)(18,26,27,22)(24,28,30,29)(4,5)(8,11)(9,13)(16,19)(21,23)(22,26)(28,29) involution — undirected(3,4,6,5)(7,8)(9,12)(10,11)(13,14)(15,17)(16,21)(18,24)(19,23)(20,25)(22,28)(26,29)(27,30)(15,18,20,27)(16,22,19,26)(17,24,25,30)(21,28,23,29)(3,5,6,4)(7,9)(8,12)(10,13)(11,14)(15,19,20,16)(17,23,25,21)(18,26,27,22)(24,29,30,28)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.