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