For each discount rule you can set badge, which would appear on catalog or product page.
Output place depends on your theme design, because plugin uses standard functionality for displaying badges.
How can I output badge?
- Turn on "Change product prices to discount prices".
- Copy text of "Custom badge". Open "Shop - Products". In right sidebar find "Badge - Custom". Copy text
- Paste badge text in any promotion
After all steps badges will appear on catalog and product page.