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