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