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