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