As fars as I know, amnd I am quite sure of this, that has never been possible using Safari. Users on the forum have moaned about about it since the inception of iCloud. You can do it in Safari desktop on a computer, but you could never do it in mobile Safari. It is possible using other browsers that can identify as desktop browsers, but results are somewhat unreliable in using those browsers.
The point is that everything that you need to access in iCloud.com is already on your iPad, including the Find My iPad app. Your contacts, calendar, email, notes, photo stream, documents .... Everything that you can access in iCloud.com is already on the iPad.