The display of the payment method in the Shopify Checkout is generally not controlled by us. This is done by the Shopify Checkout. Therefore, if you use a standard Shopify User (Basic - Advanced) you cannot influence this.
However, if you are a Shopify Plus user you have access to the checkout.liquid and you are able to change the sort order of the payment methods in the checkout. For more Informations you can contact the Shopify Support directly.