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