In the coordinate plane, a circle is defined by the equation:
$$ (x - h)^2 + (y - k)^2 = r^2 $$
where $ (h, k) $ is the center of the circle, and $ r $ is the radius. If a circle has its center at the point $ (3, -2) $ and a radius of $ 5 $, what is the equation of the circle in the standard form?