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