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