One vertex per element, one color per generator, with an edge from x to x·s.
(5,6,9,7)(8,10,12,11)(13,14,17,18)(15,19,20,16)(21,22)(23,29)(24,32)(25,28)(26,31)(27,34)(30,35)(33,36)(2,4)(6,7)(8,12)(13,14)(15,19)(16,20)(17,18)(21,22,25,28)(23,26,31,29)(24,32,34,27)(30,36,33,35)(1,2,3,4)(6,7)(10,11)(14,18)(15,20)(21,22)(23,29)(24,27)(25,28)(26,31)(30,36)(32,34)(33,35)(5,7,9,6)(8,10,12,11)(13,15,17,20)(14,16,18,19)(21,23)(22,26)(24,33)(25,31)(27,36)(28,29)(30,34)(32,35)(5,8)(6,10)(7,11)(9,12)(13,16)(14,15)(17,19)(18,20)(21,24,25,34)(22,27,28,32)(23,30,31,33)(26,35,29,36)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.