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