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)(15,18)(16,17)(19,20)(21,22,24,26)(23,27,28,25)(2,4)(6,8)(10,12)(13,15,19,17)(14,16,20,18)(1,2)(3,4)(7,11)(10,12)(13,16,19,18)(14,15,20,17)(21,23,24,28)(22,25,26,27)(5,7,9,11)(6,10,8,12)(13,17,19,15)(14,16,20,18)(21,22)(23,25)(24,26)(27,28)(5,8,9,6)(7,12,11,10)(13,18,19,16)(14,15,20,17)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.