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