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