Hello there!
I did some research and found
this article that may provide some help on how to set up the device and get it working with the Arduino IDE, as well as where to get the appropriate libraries and board drivers.
I recently purchased the Adafruit ESP32 Feather, and ran through the same help page and now it is up and running perfectly, so I highly recommend the help page for your Feather.
Take a look and let me know if it helps.