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