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