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