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