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