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