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