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