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