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