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