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