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