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