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