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