The streaks you are referring to I would rather call ridges.
The surface of the moon is of course not a perfectly flat and the same way as Earth has ups and downs, there are ridges on the Moon, too.
You say that most of them are diagonal - top-left to bottom-right but on the right hand corner of the image, there are ones vertical ones. So, there is no specific orientation for these "streaks".
On the other hand, if there were streaks around a crater such that concave part of the streaks point towards the crater, they are due to shock waves travelling outwards from the point of impact.