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