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