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