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