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