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