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