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