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