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