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