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