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