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)(19,25)(20,34)(21,27)(22,28)(23,38)(24,29)(26,36)(30,40)(31,41)(32,47)(33,42)(35,48)(37,44)(39,45)(43,46) involution — undirected(2,6)(7,8)(9,10)(11,15)(12,14)(13,16)(17,19)(18,25)(20,35)(21,30)(22,31)(23,32)(24,33)(26,43)(27,40)(28,41)(29,42)(34,48)(36,46)(37,45)(38,47)(39,44) involution — undirected(1,3,5,4)(2,7,6,8)(9,11)(10,13)(12,16)(14,15)(17,20)(18,26)(19,30)(21,24)(22,36)(23,37)(25,39)(27,28)(29,44)(31,45)(32,46)(33,35)(34,38)(40,47)(41,48)(42,43)(1,4,5,3)(2,8,6,7)(11,16)(13,15)(17,21,24,20)(18,27,29,34)(19,30,33,35)(22,36,23,37)(25,40,42,48)(26,38,44,28)(31,46,32,45)(39,41,43,47)(10,14)(13,15)(17,22,24,23)(18,28,29,38)(19,31,33,32)(20,36,21,37)(25,41,42,47)(26,27,44,34)(30,45,35,46)(39,48,43,40)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.