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