My first option was to use a figure to be able to represent through the space occupied by each category the frequency of interviewees (or the categorizations) related to that content. From a peer review, I am considering changing this figure to a table with three columns indicating:
1) category name
2) frequency of coded interviewees
3) quotes from interviews
I notice some variability in the literature on what is the best way to make graphical representations of results in qualitative studies.