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