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