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