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