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