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