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