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