Hello,
Images from your screenshot are banners elements placed in the Custom Carousel element of the WPBakery page builder. Elementor page builder does not have a carousel element that allows adding banners inside. So, there is no option to create slider of the banners like it was made for the WPBakery demo.
For the Elementor page you can use only the Product categories element to show the product categories like slider for the mobile and choose the categories you want to show there in the element Data settings. Or look for an additional Elementor addon that allows creating custom sliders.
Regards