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