I will add to Timanix's excellect adivce, and I can tell you based on the plotting style that it's a ggplot figure, perhaps there's someone at your institution who uses R who could help you make something similar. But, in any case, the figure was generated outside of qiime2. Some people like to publish with their qiime2 figures, others will generate them outside the pipeline. Its a personal, stylistic choice based on your coding ability and what you like aesthetically. If R isn't your cup of tea and you're not happy with the qiime graphs, you might consider another plotting software you're more comfortable with.
You might want to check out some previous threads that have discussed this topic.