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