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