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