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