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