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