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