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