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