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