Try Mozbot (
http://www.mozbot.com/ ) which is actually just Google with a nicer interface. Mozbot is working in partnership with Google, but they have different ideas about the interface.
Their version of Google's "Cache" is accessed by clicking on "History" and then choosing the "Google" button (if you click "Archive.org" you get no highlighting, but more old-versions of the page).
If you only need cache and NOT highlighting, you can also try
Clusty (
http://clusty.com/ ) and click on "[cache]"
If you only need highlighting and NOT cache, you can also try
Ixquick (
http://us.ixquick.com/eng/ ) and click on "Highlight"