converting buffer message to readable utf8 using node

Question:

how can I make my sensor data come in as proper x,y,z coordinates or something more human readable??

Background:

I have packets of sensor data (eg. Gravity, Rotation etc..) coming from my android phone

Ok so I've a UDP server using nodeJS. It is open and listening for a message data.

server.js

var PORT = 33333;
var HOST = '0.0.0.0';

var dgram = require('dgram');
var server = dgram.createSocket('udp4');

server.on('listening', function () {
    var address = server.address();
    console.log('UDP Server listening on ' + address.address + ":" + address.port);
});

server.on('message', function (message, remote) {
    console.log(message);

});

server.bind(PORT, HOST);

This message is formatted as a buffer((?) what is it really called binary?).

This is what happens when i do console.log(message.toString("utf8"));