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