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