I haven't made one for a year or two.
It is called a V-n or V-g diagram.
You can make it yourself.
You look up all the information in the POH/AFM.
Horizontal line is airspeed.
Vertical line is g-loading.
Top border is positive-g load limit.
Bottom border is negative-g load limit.
Right border is Vne.
Left border is Zero kts/mph.
The positive knee is at Va, Vs is another point at 1-g.
I would have to go back and review my sources, but this is what I recall
from memory.
I asked Cessna and Piper for the diagrams they generate based on flight
test data, but they would not provide it.

I too have made a few by hand but its never as nice as it would be if
generated by excel or similar.