One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,8)(17,18,21,26)(19,23,28,36)(20,24,33,40)(22,34,32,27)(25,42,41,31)(29,39,43,35)(30,47,44,38)(37,45,48,46)(1,3,4,8)(2,5,6,7)(9,10,12,13)(11,14,15,16)(17,19)(18,23)(20,29)(21,28)(22,30)(24,39)(25,37)(26,36)(27,38)(31,46)(32,44)(33,43)(34,47)(35,40)(41,48)(42,45)(10,13)(14,16)(18,24)(19,28)(20,31)(22,32)(23,35)(25,27)(26,40)(29,45)(33,42)(34,41)(36,39)(37,47)(38,48)(43,46) involution — undirected(2,6)(5,7)(9,11,12,15)(10,14,13,16)(19,28)(23,36)(29,43)(30,44)(35,39)(37,48)(38,47)(45,46)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.