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