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