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