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