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