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