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