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