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