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)(11,15)(12,14)(13,16)(17,18,22,21)(19,23,26,30)(20,24,29,28)(25,31,32,27)(2,6)(7,8)(11,16)(13,15)(17,19,22,26)(18,23,21,30)(20,27,29,31)(24,25,28,32)(1,3,5,4)(2,7,6,8)(9,11,12,16)(10,13,14,15)(17,18,22,21)(19,23,26,30)(20,28,29,24)(25,27,32,31)(1,4,5,3)(2,8,6,7)(10,14)(13,15)(17,20)(18,24)(19,25)(21,28)(22,29)(23,31)(26,32)(27,30)(2,6)(7,8)(20,29)(24,28)(25,32)(27,31) 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.