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