now you have the values you can try some stuff on processing
like
translate(-pitch50 ,roll50 , yaw50 );
just after rotations , you need to test and may be invert pitch roo yaw variables order in this to get proper effect
you can change box size too or colors in fill()
do your sensors give you other kind of data? like acceleration or magnetic north?
i suggest you, once you have the data the right way, to start another discussion with a question like " how to nicely represent data from arduino sensors?" with the code you have so far
i suggest that because i m sure some other peoples tried that and it s unlikely they read this discussion
for really moving object accuretly, it will be tricky to convert this data to a position