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