I'm not sure such a report exists in all honesty but I could be wrong (posting from my mobile so can't really check).
The reason I'm not 100% sure is that I personally don't use the inbuilt CIS functionality as far as sales are concerned, only to monitor the subbie payments. For sales I create an invoice as normal then 'pay' the appropriate CIS amount to a specific CIS bank account I've got set up. That way I can easily run a report on said bank account each month (it'll only include CIS that's actually been paid which is what we need) plus as a safety net I teach my client to only 'pay' the CIS amount once they've had the relevant slip sent through - saves unnecessary chasing come year-end.
Let me know if you want me to go into more detail.