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