Ah, welcome aboard,
reason! I'm glad you could join us!

As
Tombow says, a good place to request an image of a transmutation circle (or find out information about transmutation circles) would be
Transmutation Circles in FMA, All Related Information Goes Here. Perhaps if no one can find a clear image/vector of the transmutation circle you're looking for, someone could provide you with a screenshot on our screenshot thread, then yourself or someone else (if you should request it) could help create a vector of it by using the screenshot as a reference?

Also, to find out info on transmutation circles, there is also a thread created by our member
Nature Path Alchemist about
how transmutation circles work. He's quite the expert when it comes to explaining the ins and outs of transmutation circles and he accepts questions in that thread relating to them. So if you ever do find an image of that transmutation circle you're looking for, you could make an enquiry on that thread as to what it means etc? That said,
Nature Path Alchemist seems to be on a hiatus from our board at this moment and there's no telling if/when he'll ever get back to the questions/requests he has thus far received.

But hopefully, at some point, he will be able to.