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