Install Appium XCUITest Driver

Clone Appium XCUITest Driver repo https://github.com/appium/appium-xcuitest-driver

git clone --recursive https://github.com/appium/appium-xcuitest-driver.git
cd appium-xcuitest-driver
npm install

Set your appium path to the appropriate location (Where you cloned appium-xcuitest-driver) and you can start the driver by doing:

node .