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