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