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