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