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