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