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