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