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