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