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