Generally, We don't need any washing buffer. Just pellet down the cells, and resuspend them in nuclease free water and boil them for few mins, if going by boiling method.

Otherwise, follow the kit protocol, if you are using some genomic DNA extraction kit.

Hope it will help you.

If you want to rinse,  the simplest is to use water.  Bacteria are very hardy and not likely to lyse when rinsed with water

In our experience, we wash the cells wih saline (0.85%) without further interference or damage to them. In accordance with the statement by Prof. Kalama

I cannot use salt - but need to have cells intact after cell wall removal. I think TE is a buffer of chose

PBS is also good in some cases