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