Hmm actually, in Spanish if you pronounce it like "Sue-lay-ma", it'd spell like "Zulema". Otherwise, Zulama is pronounced more like "Sue-lah-ma".
Although I've never heard the word "zulama" before, but I have heard Zulema as a name. It isn't a common name, though, I've only heard it just like once or twice in my life, hehe.