One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(6,10)(7,12)(13,14)(15,17)(16,19)(18,20)(21,22,26,27)(23,28,29,24)(25,33,34,30)(31,32,36,35)(13,15,18,19)(14,17,20,16)(22,27)(24,28)(30,33)(32,35)(5,6)(7,11)(8,12)(9,10)(13,15)(14,16)(17,20)(18,19)(21,23,26,29)(22,28,27,24)(25,31,34,36)(30,35,33,32)(1,2,3,4)(5,7,9,12)(6,11,10,8)(13,16,18,17)(14,19,20,15)(21,24,26,28)(22,29,27,23)(25,32,34,35)(30,36,33,31)(5,8,9,11)(6,12,10,7)(13,17,18,16)(14,15,20,19)(21,25)(22,30)(23,31)(24,32)(26,34)(27,33)(28,35)(29,36)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.