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