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