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