。
She likes taking photos.
Literal
She [topic-は] photographs [object-を] take [nominalizer-の] [subject-が] liked is.
写真を撮るのが好き nominalizes the action (撮るの) and marks it as the liked thing with が. The の nominalizer is natural here for a concrete, experiential activity — she enjoys the act of photographing. 撮る (とる) is the standard verb for taking photos.