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