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