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