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