This one is completely different, but looks a lot like his, so I am giving him credit.
Step 1: The front
6 purple connectors
2 yellow connectors
2 blue connectors
2 white rods
6 green rods
Connect a purple connector with a blue one and a yellow one with 2 green rods and a white. Now slide two other purple connectors on. Add a white rod on the edge.
Do this twice, the connect them with 2 green rods.