You will have to manually go into each hub you want to print out. There is no option on hubpages to print them all at once.
I always preview the pages and shrink the size before I print. Less paper wasted.
1. Go to the hub you want to print
2. Right click on the page using your mouse and go to print preview.
(This will show you how many pages your hub will print onto.)
3. Use the shrink to fit at the top of the page, to reduce the size of pages your hub will print on. Use the option of viewing 2, 4 or 6 pages on the screen to see how the pages will look before you print them.
4. Once you are happy with it, hit print