The ornamental design for a visor cover for motorcycle, as shown and described.
FIG. 1 is an upper right front perspective view of my design for a visor cover for motorcycle in position of use, with portions of a motorcycle shown in broken lines for purposes of illustration only and forming no part of the claimed design.
FIG. 2 is a front view thereof.
FIG. 3 is a top view thereof.
FIG. 4 is a rear view thereof; and,
FIG. 5 is a side view thereof rotated ninety degrees (90°C).