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