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