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