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