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