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