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