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