There are three important busses, or groups of parallel wires that need to be connected in order to use a MAX158. (There are also additional single wires, but they're covered elsewhere.)
To make these connections easy, go to e.g. Active Electronics or perhaps other places that sell rainbow-colored ribbon cable, buy and use it. Follow the "Resistor Color Code" to make things "EZ" on yourself :) It is easy to understand, because most of it follows the Rainbow colors:
Connect one end to the 28-pin socket that you mounted to a protoboard. Use the pinout of the max158, and follow the colors!
Notice how this one begins at Black(0) and ends at Violet(7):
Notice the split in the wires. That is because D0-D3 are on one side of the chip and D4-D7 are on the other side.
D0-D3. Notice how they're Black(0) through Orange(3).
D4-D7. Notice how they're Yellow(4) through Violet(7).
A more zoomed-out view so you can see the whole wire.
This is what I put at the other end, but you can just solder it directly to your board if you want: