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