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