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