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