Yes — there's a Catering: Header Image setting (Client Config, "Order: Catering" group) that lets you upload an image file used as the banner/header on the customer-facing catering ordering page, the same way every other ordering module (à la carte, wholesale, etc.) has its own header image setting. It's a per-account image (not scoped per kitchen location) and the setting only appears when the Catering module is active.