I guess you can load the SavedModel as a Keras model
model = tf.keras.models.load_model(saved_model_path)

and once you have it, you can follow the answer I wrote on StackOverflow about how to graph any graph (the call method of a Keras model is always decorated with tf.function hence the same answer applies).
Here’s the answer on SO: https://stackoverflow.com/a/56698035/2891324 123
Hope it helps