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