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