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