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