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