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