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