Given that the link shows last week's episode as being available for a further 22 days, you should have plenty of time to catch up with this week's programme.
It used to be around 5 minutes after the end but I think it takes a bit longer now. I've gone to watch missed episodes of Corrie the next day and they've not been there.
Since the programme finished at 11pm on ITV+1 (before which it couldn't be made available online) it's hardly had any time to appear on ITV Player yet. It might be there very soon.