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