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