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