I made these animated graphics. The top one was an inverted color of the image below:

It started out looking like this:

Then I just rearranged the circles in the layers to make it look like this:

Here, you will see the steps/frames that makes this animation possible:

I worked on a single image created from basic circles, with a few arrangements and layers of changes I was able to make it into a fun-looking animation (at least for me).

Thanks!