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