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)(15,17)(16,21)(18,22)(19,23)(20,24)(25,27)(26,28)(5,7,10,8)(6,11,9,12)(13,15,18,25,20,26,19,16)(14,21,23,28,24,27,22,17)(2,4)(5,6,10,9)(7,12,8,11)(13,16,18,15,20,25,19,26)(14,17,23,21,24,28,22,27)(5,8,10,7)(6,11,9,12)(13,17)(14,15)(16,22)(18,21)(19,27)(20,28)(23,25)(24,26)(5,9,10,6)(7,12,8,11)(13,18,20,19)(14,22,24,23)(15,25,26,16)(17,27,28,21)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.