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