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