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