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