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