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