How can I memorize my "stories" to be able to apply to any question asked in the interview?

After you've prepare your stories, you don't need to memorize them verbatim. Just think through the events that took place and the results of those events.

Practice saying them aloud so that you become more comfortable sharing these stories, and then think about the specific skills that you used, relative to what is required in the job.

Visit Interview Question: "What applicable experience do you have?" (How to give examples to demonstrate experience) for more information on preparing your relevant success stories.