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