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