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 view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof; and,
FIG. 6 is a top plan view thereof.
The broken line showing of a portion of the bottom of the faucet handle in FIG. 3 is included for the purpose of illustrating the bounds of the claim and forms no part of the claimed design.