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