It would happen alot slower is the simple answer.
The first nations to gain full independence peacefully would likely be in the 60's, followed by a wave of independence in the 80's (like the OTL 60's)
and the last ones gaining independence between 1990-2005.
Apart from that their would likely be alot more instances of territories integrating with the mother country, similar to French Guyana.
Now this would'nt be like the whole of Algeria remaining French, but like most or all of Oran remaining part of France while the rest becomes Algeria.
Lastly I think you'd see more organizations like the Commonwealth, which themselves may or may not be closer than OTL, perhaps leading to
something like the EC and later EU between some countries and the nations of their former Empires.