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