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