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