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