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