Hi, Speech for what occasion? Is it a send-off party for your colleague? I, as an individual, don't mind providing you with a draft. However, you might get stuck during the course of the speech if you try to memorize and present it by heart.
For a send-off speech
Generally, we need to recall the contributions of the employee during his/her stint with the company, accomplishments, how they are unique from other employees, etc.
So why don't you prepare a speech and present it here so that we can improvise the same? Once you prepare it on your own, it will be easier for you to present. Also, if you are delivering for the first time, you should be confident because, for many, public speaking is scary.