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