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