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