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