AWS S3 url mask with my domain name.

Hi, i installed s3 in my wordpress but i see my s3 files are with url :" http://cm-mediafiles.s3-us-west-2.amazonaws.com/wp-content/uploads/2016/10/OnlyforU.jpg "

Here my URL is "http://cm-mediafiles.s3-us-west-2.amazonaws.com/wp-content/"
I would like to change it to " http://www.cinemamathi.in/wp-content/ "

Can you please look into this as i tried to config but failed to set it up.

Thanks,
Raj