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