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