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