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