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