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