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