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