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