Thank you for contacting Intel Communities.
I am sorry to hear you had issues to download the latest graphics driver.
I just tried to download the driver and I was able to, please try the following link and let me know how it goes.
Intel® HD Graphics Driver for Windows® 10* for Intel® NUC Kit NUC7i3BN, NUC7i5BN, and NUC7i7BN Version: 22.214.171.12478 (Latest) Date: 6/15/2017
I hope to hear from you soon.