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