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