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