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