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