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