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