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