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