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