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