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