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