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