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