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