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