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