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