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