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