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