Most examples work across multiple plotting backends, this example is also available for:
import holoviews as hv
from holoviews import dim
hv.extension('bokeh')
from bokeh.sampledata.autompg import autompg as df
title = "MPG by Cylinders and Data Source, Colored by Cylinders"
boxwhisker = hv.BoxWhisker(df, ['cyl', 'origin'], 'mpg', label=title)
boxwhisker.opts(show_legend=False, width=600, box_fill_color=dim('origin').str(), cmap='Set1')