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