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