Demo Setup: WooCommerce Search
WooCommerce search example explained
Under the Theme & Styling -> Overall box Layout panel choose the Simple Blue Horizontal theme.
Go to the Frontend Search Settings -> General panel and change the Search Settings Position option to Block or Custom, and also make it visible by default.
Now let's create the filters. First switch to the Taxonom Terms filters panel and choose the terms you want to display. In your case we choose "all" from product_cat, pa_color and pa_size
Now to change how the filters appear, click on the blue Display Mode button. For every selected taxonomy box you can choose the filter types and the related options.
That's it, now you will have taxonomy term filters available.
In this example we have a simple price filter. To make that, switch to the Custom Fields panel, and make a filter on the _price field, choose Range Slider as the type. Leave empty the Slider Range so the min/max price is parsed from the database.
You can change the order of the filter group fields on the Advanced panel. If you want to display results where the price is not specified then make sure that the Allow results with missing custom fields, when using custom field selectors? option is also enabled.
In the results we want to display some taxonomy terms as well as the price. For that we are using the Advanced Title and Content field features. That allows displaying categories, custom fields etc.. within the result contents.