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)(21,25,29,30)(22,31,32,26)(1,3,6,4)(2,7,8,5)(9,11)(10,14)(12,15)(13,16)(17,19,23,28)(18,24,20,27)(21,22,29,32)(25,26,30,31)(1,4,6,3)(2,7,8,5)(9,12,13,14)(10,11,15,16)(19,28)(21,29)(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)(21,30,29,25)(22,31,32,26)(17,21,23,29)(18,25,20,30)(19,22,28,32)(24,26,27,31)(17,22)(18,26)(19,29)(20,31)(21,28)(23,32)(24,30)(25,27) 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.