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