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