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