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