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