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