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