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