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