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