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