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