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