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