Not going to post a torrent though - mostly cuz you all can figure it out anyhow. The images are all of the form:
NNNNNN01.JPG on that S3 bucket.
NNNNNN is the object ID (the internal record ID of the work of art) zero-padded to 6 digits. The object ID is the same value that appears, for instance, in the URL on their online collection:
URL for Irises: http://www.getty.edu/art/gettyguide/artObjectDetails?artobj=...
URL for the full-rez image on S3: http://gettylargeimages.s3.amazonaws.com/00094701.jpg
You figure it out :)