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)(15,24)(16,26)(17,19)(21,27)(22,25)(2,4)(5,7,9,8)(6,10,12,11)(13,14)(15,25)(16,27)(17,23)(18,20)(19,28)(21,24)(22,26)(13,15,17,26,18,16,19,24)(14,21,28,27,20,22,23,25)(1,2,3,4)(13,16,19,26,18,15,17,24)(14,22,23,27,20,21,28,25)(5,8,9,7)(6,11,12,10)(13,17,18,19)(14,23,20,28)(15,24,16,26)(21,27,22,25)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.