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