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