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