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)(21,22,25,30,26,28,24,29)(23,31,33,36,34,32,35,27)(5,7)(6,10)(8,15)(9,14)(11,19)(12,18)(13,16)(17,20)(21,23,26,34)(22,27,28,36)(24,33,25,35)(29,31,30,32)(2,4)(5,8)(6,11)(7,13)(9,16)(10,17)(12,20)(14,15)(18,19)(22,28)(27,36)(29,30)(31,32) involution — undirected(8,16)(11,20)(13,15)(17,19)(21,22,24,29,26,28,25,30)(23,32,35,36,34,31,33,27)(6,12)(7,14)(11,20)(13,15)(21,24,26,25)(22,29,28,30)(23,33,34,35)(27,31,36,32)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.