One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,4)(13,14)(15,25)(16,30)(17,22)(18,23)(19,24)(20,27)(21,31)(26,34)(28,36)(29,35)(32,38)(33,37)(39,40)(41,43)(42,44) involution — undirected(5,6)(7,10)(8,9)(11,12)(13,15,18,28,19,29,17,27)(14,20,22,35,24,36,23,25)(16,26,31,40,33,42,32,41)(21,34,30,43,38,44,37,39)(2,4)(6,9)(10,12)(13,16,17,32,19,33,18,31)(14,21,23,37,24,38,22,30)(15,26,27,41,29,42,28,40)(20,34,25,39,36,44,35,43)(5,7)(6,10)(8,11)(9,12)(13,17,19,18)(14,22,24,23)(15,27,29,28)(16,31,33,32)(20,35,36,25)(21,37,38,30)(26,40,42,41)(34,39,44,43)(7,11)(10,12)(13,17,19,18)(14,22,24,23)(15,27,29,28)(16,32,33,31)(20,35,36,25)(21,30,38,37)(26,41,42,40)(34,43,44,39)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.