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