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