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