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