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