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