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