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