FIG. 1 is a perspective view of a faucet handle showing my new design; FIG. 2 is a first side view thereof; FIG. 3 is a second side view thereof; FIG. 4 is a rear view thereof; FIG. 5 is a front view thereof; FIG. 6 is a top view thereof; and, FIG. 7 is a bottom view thereof. The broken lines showing portions of the handle form no part of the claimed design.