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