Here’s an AppleScript implementation of a great idea by Ebi.

It provides numeric keyboard shortcuts to jump to a specific Safari Tab directly. You can press ⌘-⌥-1 to switch to the first tab, ⌘-⌥-2 for the second etc.

set myPath to (path to me) as text
set tabNumber to (word -2 of myPath) as number

tell application "Safari"
	tell window 1
		try
			set current tab to tab tabNumber
		on error
			beep
		end try
	end tell
end tell

I saved this exact same script nine times with the following file names:

Switch to Tab 1.scpt
Switch to Tab 2.scpt
Switch to Tab 3.scpt
...

I put them in my Home > Library > Scripts > Applications > Safari folder and used FastScripts to assign numeric keyboard shortcuts:

Pick whatever you like, you can also use Ctrl-1, ⌘-1 etc.