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