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