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