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