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