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