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