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