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