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