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