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