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