Yes, there is a button above the monthly price that will switch to cash price.
However their marketing and sales strategy is aimed at trying to persuade you that the monthly cost is lower than other luxury cars. And it's not a lease. It's a loan so that you get the benefit of federal and state tax credits and they've worked with banks on this. Additionally, they tie their resale value guarantee to this financing.
Strange that even Tesla believe their uber wealthy target customers need to finance their purchase, are concerned at the monthly cost and the residual value.