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