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