You'll find entrances at...
(A) 1087 Main Street, Malden MA
(B) Woodside Street, Melrose MA
(C) corner of Sylvan Street and 2 Pine Banks Park Road, Melrose MA
(See the photos below.)
Click for directions from Google. Go to Traffic View to "walk around" photos of the area.
< Note that some of the cemetery roads that are shown in Google (and other online map services) do not actually exist.