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