Shielded cables to capacitive sensor?
To be honest, the best way to do this is not to run the capacitive sense signals over any distance. Local cap sense ICs connected over distance via a digital bus is the way to do this most robustly. Anything else and you're having to fight making the outside of the cable insensitive to touch without placing a large capacitive burden on the cap sense signal itself.

There are ways around this (including capacitively coupling the shield to ground) but none are as reliable as just having the cap sense IC where you need it and most involve a tradeoff against proximity sensing. The increased cost normally pays itself back quickly in system robustness and reliability.