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