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