Well, hang on...
This might not be anything serious. These bikes tend to run a little hot and when they do, they will boil over. The hose vents down to a point that is in between your stator cover and the sprocket guard. If that hose was moved or has been pulled up, it would throw coolant everywhere. If the oil has been overfilled, it can also overflow and the wind from your bike will blow it all over.
I'd say clean your bike really well, check all of your fluids, refill them if necessary, check all of your hose connections and lines to make sure they are connected.
After you do that, fire it up and check for leaks. If there are no leaks, take it for a short ride in the evening, when it's not likely to overheat. When you get back, check your fluids again.
...I guess, don't panic yet.
