I would actually have to go for: "Who knows?"
,But
When one starts to think about it, there is an outside chance that that figure (and all figures drawn by connecting certain points with in the original) might be a visual demonstration of some mathematical and/or fundamental law of life/existence.
God could be a symbol, never thought of it that way, but perhaps (if you meant a drawn one and not a conceptual one).
Bare with me: Everything is based on a set of fundamental laws and rules (life, reality, what we can and cannot experience), thus in theory if one could map out and comprehend all of these rules, or better yet one fundamental law governing it all and write it down (in all it's complexity) to a single symbol, well, The symbol would fit my definition of "God", aka the base for all life and existence.
Funny thought, just as plausible as the next one in the absence of concrete evidence
