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