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