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