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