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