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