The ProcessingDataStructure2Dot plugin allows you to convert a section of the processing hierarchy into a dot file which can be converted into a graphics format of your choice. This allows you to visualize the processing hierarchy created by a particular workflow.
Extract the processing hierarchy rooted at the processing SWID 5174:
$java -jar ~/.seqware/self-installs/seqware-distribution-1.1.0-alpha.2-SNAPSHOT-full.jar -p net.sourceforge.seqware.pipeline.plugins.ProcessingDataStructure2Dot -- --parent-accession 5174
Writing dot file to output.dot
$dot -Tpng output.dot > output.png
Note for the latter step, you may need to install graphviz or a dot file viewer of your choice.