3 x max7219. Each chip drives an 8x8 section of the matrix. Daisy-chain the 3 chips, only 3 Arduino pins needed. Each chip will need a resistor to set the led current and 2 caps.
That's probably the easiest way.
But how do you need to drive the LEDs? Are they single colour of RGB? Do you need to dim the display overall or dim each led independently?