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