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