It's a CLI, not a TUI. I put quite a bit of thought into that decision, and whether to integrate a pager. See [1]. The workarounds are (1) limit the number of results per page with -n <num>; (2) use the -r, --reverse option to show the top results last.
It would be nice if there was a way to run a terminal command without auto-scrolling. So often I run something that spits out tons of error messages, only to have to scroll back up again to find out what happened.
[1] https://github.com/jarun/googler/issues/281