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