There's an actor whose voice I really like. People ask me why I like him, but I can't say that I like his way of speaking. Thanks!
Kare no shaberikata ga suki desu kara.
If you just want to say you like his way of speaking, you don't need the kara at the end. If someone asks you why you like him, you add kara to say 'because'.
Note: Using 'kata' is really easy to use with any verb to say 'the way of doing something'. Just drop the -masu on the verb, and add kata.
shaberimasu = shaberikata (way of speaking)
tabemasu = tabekata (way of eating)
kangaemasu = kangaekata (way of thinking)