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