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