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