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