[R] How to draw multi group plot?

[孟欣]

As the attachement,I wanna draw multi group plot.
But I can only use :
plot(x,y...) 
points(...)
 
It's a heavy work to use these command if there're too many groups to be drawn because I have to use point(....) for many times.
 
I wanna know wheter there's command which can draw the multigroup plot directly?
 
Thanks
 
My best.