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