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