Lets say I have 1000 books that have tags associated with them for example

Book 1: [environment, fiction, story]
Book 2: [fiction, science, space, environment]
Book 3: [science, workbook, space]
....

As you can see any book can have multiple tags. I want to present how many books are in each category, but if I draw a simple bar graph that might not be the best representation since the total of each bar would be more than 1000 and that might be confusing.

Is there a better way to present my data.