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