The ornamental design for a sprayer of a dishwashing machine, as shown and described.
FIG. 1 is a perspective view of an embodiment of a sprayer showing our new design;
FIG. 2 is a front view of the sprayer from FIG. 1, the rear view being a mirror image thereof;
FIG. 3 is a right side view of the sprayer from FIG. 1, the left side view being a mirror image thereof; and,
FIG. 4 is a top view of the sprayer from FIG. 1.
As shown in FIGS. 1-4, the sprayer has arms and a medallion with a reflective appearance, such as polished metal or chrome for example, as represented by the shading. The broken lines in the figures illustrate portions of the sprayer for dish washing machine that form no part of the claimed design.