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