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