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