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