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)(11,13)(12,14)(15,16)(17,18,22,27)(19,20,30,24)(21,26,25,32)(23,31,29,28)(1,3)(2,6)(4,7)(5,8)(9,10)(11,15)(12,14)(13,16)(17,19,22,30)(18,24,27,20)(21,23,25,29)(26,28,32,31)(1,4,5,2)(3,7,8,6)(9,11)(10,13)(12,16)(14,15)(17,20,29,32,22,24,23,26)(18,25,31,19,27,21,28,30)(3,8)(6,7)(11,16)(13,15)(17,21,22,25)(18,26,27,32)(19,29,30,23)(20,28,24,31)(10,14)(13,15)(18,27)(19,30)(21,25)(28,31) 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.