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