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