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