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