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