Workers > Shift Graph put "all" without quotes in input box, make sure it's checked and hit update
Edit: if you mean for the whole pool Pool > Graph
Edit: if you mean for the whole pool Pool > Graph
I should have clarified: I mean without an account, just anonymous mining with an address (like was possible with eligius).
... as it says on the http://kano.is/ web page
If you address mine, you just get the stats available at the time you check them.