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