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