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