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