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