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