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