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