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