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