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