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