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