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