While Sauce stores the results of your tests, we leave it up to you how to manage the scripts themselves. A continuous-integration solution, such as Travis-CI or Jenkins, can handle automating tests and generating reports for you.
These CI systems already support Sauce integration:
• Jenkins (generally favored by enterprise customers): https://saucelabs.com/docs/jenkins
• Travis (generally better for open-source applications): http://saucelabs.com/opensource/travis
• Hudson: http://hudson-ci.org/
• Bamboo: https://marketplace.atlassian.com/plugins/com.saucelabs.bamboo.bamboo-sauceondemand-plugin
If you'd like further advice, drop us a line at firstname.lastname@example.org and we'll make sure you're taken care of. If you need in-depth advice regarding your local setup, we can always put you in touch with one of our awesome partner contractors -- friendly specialists who do this kind of thing full-time.