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