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