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