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