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