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