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