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