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