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