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