<aura:component >
    <div class="slds-m-around--large">
  <!--PART 1 for create toggle switch/checkbox form element-->    
  <div class="slds-form-element">
    <label class="slds-checkbox_toggle slds-grid">
      <span class="slds-form-element__label slds-m-bottom_none">Toggle Info</span>
       <ui:inputCheckbox change="{!c.selectChange}"/>
      <span id="toggle-desc" class="slds-checkbox_faux_container" aria-live="assertive">
        <span class="slds-checkbox_faux"></span>
        <span class="slds-checkbox_on">Show</span>
        <span class="slds-checkbox_off">Hide</span>
      </span>
    </label>
  </div>
<!--PART 2 : create a Div with slds-hide class, control by toggle checkbox-->        
   <div aura:id="DivID" class="slds-hide">
     <ul>
        <li>account 1</li>
        <li>account 2</li>
        <li>account 3</li>
        <li>account 4</li>
        <li>account 5</li>    
     </ul>  
   </div>
    
 </div>
</aura:component>

({
    selectChange : function(component, event, helper) {
        // first get the div element. by using aura:id
      var changeElement = component.find("DivID");
        // by using $A.util.toggleClass add-remove slds-hide class
      $A.util.toggleClass(changeElement, "slds-hide");
	  },
})

<aura:application extends="force:slds">
    <c:radioShowHide />
</aura:application>