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