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