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