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