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