Visualize multi select kobo data

Anonymous it is a best practice to use unpivoted data, so in your case, you need to unpivot it:

Transform Data -> Select First Column that has shirt value -> Right Click -> Unpivot other columns

You will get attribute and value columns, rename them as you see fit. Close and apply

Use clustered bar chart visual, put attribute column on the axis, value column on values and that will do it.