Refined - Social Sharing Icons Setup
This theme uses the Social Warfare Plugin which can be obtained here or by searching in Dashboard > Plugins > Add New.
Once it’s installed and activated, you’ll see a Social Warfare tab in the lower left column of the WordPress Dashboard. Click to open the settings and configure this page to look like the following paying close attention to the Position Share Buttons section.
Although the settings show the icons in primary colors, this plugin has been styled to coordinate with the theme and the icons will display as shown below. You can also customize their colors using the customizer.