If I understand the question correctly, you have a calico female
that you want to produce another calico? The best suited tom would
be black and white, preferably with lots of white. The result is
around half of the female offspring will be calico, half black and
white, with a slight chance of one having brown in its coat.
Alternatively you can use a ginger and white tom, with half of the
females being ginger and white, although there is a greater chance
of the other half being tortoiseshell-tabbies or brown, ginger and
white.