I'm a little bit confused with how to understand the relationships between spin angular momentum $S$, orbital angular momentum $L$, and the total angular momentum $J$ by visualizing those quantities. Classically, if we consider the motion of the Earth, I think $S$ is its rotation, $L$ would be its orbit around the sun, and $J$ is the combination of both. However if we consider the electron spin, I've seen the following diagram to illustrate their relations:
I'm wondering is there a way to understand the Earth's total angular momentum from this diagram? If not, can we draw a different diagram to show their relations?