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