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