好羡慕拍照的人，有这么漂亮的人可以拍: who is 的人?
The latter half of your sentence belongs to the structure subject + 有 + object + transitive verb, where the subject 拍照的人 is hidden. To understand why they are arranged like so, consider a simpler example below.

When we rearrange 我吃東西 ('I eat something'), which bears the orthodox subject + verb + object structure, into 我有東西吃 ('I have something to eat'), the sentence gravitates towards the object 東西 (i.e. food). The purpose of saying 我有東西吃 is that there is food to eat, not eating itself.

Similarly, 拍照的人/有/人/可以拍 (for simplicity, remove the adjectival phrase 這麼漂亮的) is 拍照的人/可以拍/人 rearranged (lit. ‘people who take pictures=the photographer can take someone’s picture’). 有人可以拍 emphasises on the fact that there does exist someone that a photographer (the hidden subject) can take pictures of, not the action itself.

In 我有東西吃, we may guess by emphasising on the food, the speaker might have been hungry for a long while. In 拍照的人有人可以拍, we may guess, by the emphasis on (the beauty) of photographic models, the reason of the speaker's envy. The point being, common sense does help in parsing sentences correctly.

Google translation thinks a noun (有人) placed before a verb (可以拍, lit. can take) must make it the doer of the verb, following the logic in SVO structure. That is not the case, because the structure is rearranged.