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