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