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