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