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