<img 
 id="logo"
 width="150"     src="https://cdn.worldvectorlogo.com/logos/gsap-greensock.svg" />

gsap.fromTo('#logo',
  {
    opacity: 0,
  },
  {
    opacity: 1,
    x: "random([0, 50, 100])",
    duration: 3,
    ease: 'back',
    repeat: '-1'
  }
)