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