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