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