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