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