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