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