You can export your map from the boards "... / Export" & Print menu:
The exported artifacts can be used for printing as well.
If you don't see that menu, please make sure that you have Admin role on the map. The creator of the map can set your role to admin with the Share button on the board.
You can export your map as an excel backlog, map in an excel spreadsheet, PNG image, or a multi-page PDF document.
The exported backlog is in a format, that can be re-imported later as a new story map as described in the article How to import existing stories into StoriesOnBoard?
Download the exported backlog sample here: exported_backlog.xlsx
Story map in a spreadsheet
The map style excel export can be also used to print the map on larger paper sizes such as A0 in plotters.
Download the exported map sample here: exported_map.xlsx
Printable PDF document
Download the exported PDF sample here: exported-storymap.pdf