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