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