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