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