Unfortunately, I don't think it's going to fit on a 60mm. It's shown on a chariot base, and it takes up most of it.
You may be able to shave off the back portion of the stones it's standing on, and maybe, POSSIBLY, cut the front portion and reposition the front appendage. It'll hang over the 60mm base, but hey, genestealers are always hanging over their bases.
The factory talos is floating, but it's still big, and i think it's bulkier when looking from the front or back. I wouldn't worry about it. But, you could also shave down the rock base to make the whole model shorter.
Then all you have to do is make it look like a suitable Dark Eldar beasty.