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