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