ok, so with your setup, the Ucglib constructor should be
Ucglib_ST7735_18x128x160_SWSPI ucg(/*sclk=*/ 13, /*data=*/ 11, /*cd=*/ 9 , /*cs=*/ 10, /*reset=*/ 8);
So, the Ucglib setup should be ok.
Connecting the BL without resistor is a little bit critical. And: What do you mean by PIN 5V? Is your BL connected to some 5V power supply? Unfortunately it is not clear how you power the Arduino Mino from your picture. One picture which covers power supply, Display and Mini together would be more clearly.
The other issue i see is, that the display VCC is connected to Arduino Mini VCC: If you have a 5V variant of the Arduino Mini , the PIN VCC of Display and Mini should be connected to 5V power supply.
Oliver