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