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