Using default pagination helper in cakephp.

<div class="paginator">
        <?php echo $paginator->first(' First ', null, null, array('class' => 'disabled')); ?>
        <?php echo $paginator->prev('Previous ', null, null, array('class' => 'disabled')); ?>
        <?php echo $paginator->numbers(); ?>
       <?php echo $paginator->next(' Next ', null, null, array('class' => 'disabled')); ?>
        <?php echo $paginator->last(' Last ', null, null, array('class' => 'disabled')); ?>
</div>

Below is the javascript code.

<script>
    $(document).ready(function(){
        $(".paginator a").click(function(){
            $("#updated_div_id").load(this.href);
            return false;
        })
    });
</script>

Once you click on a link under that div, it fetch the url (this.herf) and calling page using ajax.

For example your controller calling ajax_pages action.

function ajax_pages(){
        $this->layout = 'ajax';
        $this->paginate = array(
                                'order' => array('Module.created_date' => 'desc'), 
                                'recursive' => -1,
                                "limit" => PAGINATION_LIMIT
                                );

        $conditions['Module.module_type'] = $module_type;
        $data = $this->paginate("Module", $conditions);
        $this->set(compact("data"));  
}