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