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