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