There are many, many books on R graphics. I recommend the following:

Paul Murrell, R Graphics, 2nd Ed.
R code for figures:
Winston Chang, R Graphics Cookbook
R code for figures:
Deepayn Sarkar Lattice: Multivariate Visualization with R
R code for figures:
Hadley Wickham, ggplot2: Elegant graphics for data analysis, 2nd Ed.
1st Ed: Online:
Complete ggplot2 documentation:

Cheat sheets

R Studio provides a variety of handy cheat sheets for aspects of data analysis & graphics. See:

Many of these are available from the R Studio Help menu