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