You can set QuickBooks to include the Payment Method in printing your Sales Receipt. I can guide you on how to do it.
Go to the Gear icon.
Choose Custom Form Styles.
Select the template of the Sales Receipt you want to use.
From the Actions column, click Edit.
Pick the Content tab.
Click the Pencil Icon on the Header Portion of the sample Sales Receipt.
Go to the Display section.
Mark the Payment Method tick box
However, if you're referring to including the payment method when printing the receipt after you received the payment of an invoice, currently this is not available. You'd want to add a custom field on the invoice to show the payment method. You can read through this article to learn more about this feature: Create and edit custom fields in QuickBooks Online Advanced.
Swing by here if you have other questions about managing your sales forms in QuickBooks. I'm always here to help.