The ornamental design for a faucet handle, as shown and described.
FIG. 1 is a perspective view of a faucet handle showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a side view thereof; and,
FIG. 4 is a rear view thereof.
The broken-line disclosure in the view represents a portion of the faucet handle in which the claimed design is embodied, but which forms no part of the claimed design.