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