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