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