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