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