Hi there,
First of I would suggest to read carefully the documentation Nicolas gave you. You could see that there are numerous options to display filters in one or two columns, to change their height and so on.
Second, you try to download the last Hikashop version, we improved our filters and you should appreciate it (last version is 2.2.0).
Finally, the result should be displayed just like the listing is. Point is that on the link you gave mle, there is no way to apply the filters (the go button is only efficient for the search).
You should display the filter button (in System>Configuration>Features>filters) or enable the option "apply on click" for your filters.