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