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