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