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